Annual report pursuant to Section 13 and 15(d)

Defined Contribution and Defined Benefit Plans (Details Textual)

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Defined Contribution and Defined Benefit Plans (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended 25 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2011
Feb. 28, 2013
Defined Contribution and Defined Benefit Plans (Textual)        
Defined contribution costs $ 10.0 $ 11.4 $ 23.0  
Net periodic benefit cost 5.2 4.3 121.8  
Settlement losses 0 0 (109.9) (109.9)
Defined benefit pension benefit obligation 109.2 96.5   109.2
Plan assets $ 86.2 $ 79.4   $ 86.2